RAID using SCSI 2 and SCSI3

  • Thread starter Thread starter Richard
  • Start date Start date
R

Richard

Hi

Would someone be able to clarify something for me.

I have inherited a machine which has four SCSI disks, at the moment
they are one logical device and RAID 0. The top disk keeps taking
itself offline. Examining the disks more closely, two are SCSI2 and
two are SCSI3 disks. Is it possible to combine these types of disk in
a single RAID setup? Or will it cause the problems I am getting with
this machine?

As I understand it it would work if say the SCSI3 disks were on one
RAID, and teh SCSI2 were on another RAID?

Thanks for any help

Richard
 
Previously Richard said:
Hi
Click to expand...
Would someone be able to clarify something for me.
Click to expand...
I have inherited a machine which has four SCSI disks, at the moment
they are one logical device and RAID 0. The top disk keeps taking
itself offline. Examining the disks more closely, two are SCSI2 and
two are SCSI3 disks. Is it possible to combine these types of disk in
a single RAID setup? Or will it cause the problems I am getting with
this machine?
Click to expand...

Would be surprisiong. Usually you can mix any combination of SCSI
disks. Have you looked into the error log of the disk to find
out why it takes itself offline?
As I understand it it would work if say the SCSI3 disks were on one
RAID, and teh SCSI2 were on another RAID?
Click to expand...

Should not make a difference unless the firmware is buggy. That
is a possibility, but an unlikely one. The disk more likely has some
other problem or the termination is bad and it gets so many
errors on the bus that it decides the bus is unusable.

Arno
 
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